Centrifugal separator



(No Model.)

0. B. PECK. GBNTRIPUGAL SBPARATOR.

3 Sheets-Sheet 1.

Patented May 19 1666.`

AN DREW B GRAHAM. PHOTU-UTHO. WASHINGTUMD C.

(No Model.) 3 Sheets-Sheet 2.

O. B. PBGK.

GENTRIPUGAL SEPARATOR.

Patented May 19, 1896.

@No Model.) O B P'ECK 3Sheets-Sheet 3.

GBNTRIFUGAL SEPARATOR.

Illllll Illllllllllllllll ANDREW E GRAHAM.PHOTU'UTMD.WASHINGTDN.D C.

ORRIN B. PEC/K, OF CHICAGO, ILLINOIS, ASSIGNOR TO MELINDA PECK, OF

SAME PLACE.

CENTRIFUGAL sEPARAToR.

SPECIFICATION forming part of Letters Patent No. 560,625, dated May 19,1896.

w Application filed March 23, 1894. Serial No. 505,415. (No model.)

To all whom, t may concern: ner as to insure a practically watertight Beit known that I, ORRIN B. PECK, a citi joint during the movement of saidcylinder zen of the United States, residing at Chicago, hereinafterdescribed, thus preventing matein the county of Cook and State ofIllinois, rial and liquid from passing between it and 55 5 have inventeda new and useful Improvement the supporting-eylinder- The rings a and c2Vin Centrifugal Separators, of which the folare provided with annularprojections c, lowing is a specification. 1 which engage annular groovesc' in the inte My invention relates more particularly to rior of thesupporting-cylinder to retain the centrifugal ore-separators, and hasfor its rings in place during the motion of the inter- 6o 1o principalobject the provision of a machine mediate cylinder through them.V Theyare for effecting the separation of materials of tight-ly enoughcompressed between the two different degrees of specific gravity, whenin cylinders to insure their rotating together at a iinelydivided state,and a separate and substantially the same speed and still allowcontinuous discharge thereof from the treatthismovement. 65 I 5 mentvessel in which they are being subjected At the discharge end of thetreatment vesto centrifugal force and certain opposing sel theseparating-cylinder projects beyond forces. I attain this result by theuse of the the supporting-cylinder, and at this point is mechanismillustrated in the accompanying provided with an annular groove D,`formed drawings, in whichbetween two projecting .flanges on the outer 7o2o Figure 1 is a top plan View of the entire surface of the cylinder. Acrank-pin Dlon machine. Fig. 2 is a central vertical longitua crank-diskd, mounted upon the end of a dinal section through the treatment vessel.transverse shaft d, extends into the groove. Fig. 3 is a transversesection on the line 3 of This shaft d is suitably supported in stand-Fig. 2. Fig. 4t is a transverse section on the ards on the bedplate, andis rotated by means 75 25 line a of Fig. 2. Fig. 5 is a transversesection of the engagement of a bevel-gear E with a on the line 5 of Fig.2. Fig. 6 is a central bevel-gear E onalongitudinalshafte, thelatvertical longitudinal section of another form ter being drivenbyabelt passing over pulleys of the device7 and Fig. '7 is a transversesection c and c2 upon the shaft e and counter-shaft C', on the line 7 ofFig. 6. All sections are taken respectively. The resulting movement ofthe 8o 3o in the direction indicated by the arrows. crank-pin D' causesthe rapid and preferably Similar letters of reference denote like slightreciprocation or vibration of the interparts throughout the severalviews. mediate cylinder, which is permitted by the A designates abase-plate upon which, in elasticityof the supporting means, impartingstandards A, is journaled the supportingshocks or vibrations to theseparating-surface. 85 3 5 frame B of the treatment vessel, preferablyExtending through the separating-cylinder is of cylindrical form. Thissupporting-frame the inner cylinder or hollow shaft F, which has uponits exterior a belt surface or pulley serves to feed material to theseparating-cyl- B, by which it is rotated by means of a belt inder andto subject said material to aqueous from a pulley C on the counter-shaftC', j ourand other forces for the purpose of separation 9o 4o naled instandards on the base-plate. The and discharge, and also as adeflectortoguide counter-shaft is driven by pulley C2, belted to the material alongin proximity to the sepaany suitable source of power. lVithin theratingsurface. rlhis inner cylinder is jourcylinder B is supported avibratable 'internaled in the standards F F upon the basemediate orseparating cylinder a, of comparaplate and at the feed end of thetreatment 95 45 tively light material and provided with a sepvesselextends, preferably, through a stuffing arating-surface b2, by means ofrings a a2 a2 boxfin the supporting-cylinder, this stuffingof elasticmaterial, preferably rubber. The box having a threaded gland or plugf,by ring a at the feed end of the treatment veswhich the elastic packingmaterial may be sel is provided with an annular groove b, intocompressed, insuringapracticallywater-tight 1c o 5o which extends anannular flange o .on the joint and preventing the passage of materialend of the separating-cylinder in such a manand liquid. Upon the otherextremity of the inner cylinder is a pulley G, of smaller size than thepulley on the supporting-cylinder, which is driven by a belt passingover a pulley G' on the counter-shaft C'. The size of these pulleys isso proportioned that a differential speed will be imparted to the innerand outer cylinders, so that any point on the surface of cylinder F hasa circumferential movement or travel with relation to a fixed point onthe separating-surface.

The inner cylinder F is divided by a partition H into two sections H'and H2. Into the section H' projects a iion-rotatable pipe 71, through astuffing-box 7i', similar to f. This pipe is for the purpose of feedingmingled ore and a liquid, preferably water, into the section, from whichit passes into a conduit l, extending within the cylinder F for agreater or less part of its length, as desired, and being closed exceptfor orifices l' through the wall formed by the inner cylinder, throughwhich the material and liquid passes, and the former is deposited uponthe separating-surface along and near a longitudinal partition if on theinner cylinder, which extends its entire length within theseparating-cylinder, as shown by dotted line in Fig. 2. This partitioni, with a similar partition i', projects radially from the surface ofthe inner cylinder to a point near the separating-surface and dividesthe channel or passage therebetween into two longitudinal sections orpassages K K', the former, in which separation is effected, having thegreater circumferential width. Upon the top of these partitions nearestthe separating-surface are fixed strips 2 of elastic material,preferably rubber, serving to more completely divide the sections K K'and as a cushion to prevent injury to the parts if they come in contactduring the operation of the machine as a result of the tremor ormovement caused by the high speed of rotation of the parts and the yieldof the elastic supporting-rings. Into the section K extend hollowprojections or tubes 7a, fixed in orifices in the surface of the innercylinder, these tubes being preferably inclined toward the dischargeend, for the purpose hereinafter stated. Over this section on the innercylinder are also solid agitating-pins 7c' and radial orifices k2. Inthe other section, K', are the similarly-inclined tubes L, of greaterinside diameter than tubes k, and the pins L', mounted on the surface ofcylinder F. The tubes 7u L and the orifices k2 have forced through themjets of a liquid, preferably water, introduced into the section H2 ofthe inner cylinder by means of a nonrotatable pipe Z, passing throughthe stuffingbox Z'. The flow of liquid in this pipe Z, and also that-ofthe mingled material and liquid in pipe h, may be controlled as desiredby suitable valves. (Not shown.)

The end of the separating-eyliiider extends into a hood M, which isdivided into two parts or divisions N' N2 by a partition M', from whichthe lighter and heavier materials are conducted away by the pipes a' a2,respectively, to separate receptacles. The heavier material isdischarged into division N2 by means of a spout N, secured to the innercylinder between the outersides of the partitions t' e" and extendingover the end of the separating-cylinder an d embracing, by means ofdouble annular flanges n n, the inner periphery of the partition M',thus delivering to the division N2 only that material from the sectionK' from which the heavier portion is discharged.

Vhen a separating vessel or cylinder is used of sufficiently largediameter to permit an accumulation or head at the receiving end tosecure, by the centrifugal force generated therein, the desired force offlow through the saine, the packing-boxes are preferably dispensed with.

The operation of the machine is as follows: The treatment vessel beingrotated with sufficient rapidity to develop the degree of centrifugalforce desired, the material to be separated, in a finely-divided stateand mingled with a sufficient amount of liquid to permit itssubinergeiiee on the separating-surface and the suspension of thelighter portion, is introduced by means of pipe h into the section H' ofthe inner cylinder F. It then passes into the conduit and thence bytheorifices I' into the section K of the channel or passage between theinner cylinder and the separating-cylinder, being deposited on theseparating-surface along and near the loiigitudiiial partition i', whereby the action of centrifugal force the heavier is precipitated and thelighter allowed to wholly or partially become suspended in the liquid,the separation being assisted bythe shocks or vibrations imparted to theinner cylinder by the crank-pin D and by the jets of liquid from tubesla and orifices k2, and also by the agitation produced by the directcontact of the moving tubes and the solid pins 7a'. As the lighter isheld in suspension, it is moved by the iiiipelleiit force of the liquid,produced by its resultant flow, aided by the direction of inclination oftubes 7.3, along through the channel or passage wholly or partiallywithout frietional contact with the separating'- surface and dischargedinto the division N' of the hood M, from which it is conducted away bythe pipes n'. By reason of the differential speed of rotation of theinner and intermediate cylinders the surface of one travels withrelation to the other, the resultant motion of the separating-surfacebeing indicated by the arrows in Figs. 3 and 4, and the material on theseparating-surface deposited by the orifices I' along one side of thesection K is slowly carried across said section, during which travel theseparation and removal of lighter substances is effected, and theheavier material gradually passes under the longitudinal partition e"into the space 7c', where it is subjected to the increased agitationproduced by the impact of the jets of liquid from larger tubes L, and atthe saine IOO IIO

IZO

time to the increased impellent force of the greater quantity of liquidiiowing with a greater velocity in the more narrow space. Theseincreased aqueous forces will dislodge the heavier and move it alonganother portion of the separating-surface from that on which the lighteris being separated and discharged in section K, and deliver it to thedischarge-spout N, from which it iiows into the other division N2 of thehood and is conveyed by the pipeu2 to a separate receptacle.

In the form illustrated in Figs. 6 and 7 the surface of the innercylinder over the section K is concentric with the separating-surfaceand the channel or passage in this section of comparatively smallsectional area. Over the other section, K, the inner cylinder is ofirregular shape, as shown in Fig. 7, making the channel wider, and thisportion also tapers from the feed to the discharge end, thus graduallyincreasing the area of the channel. The section K is provided withjet-tubes 7a on the inner cylinder and also with the solidagitating-pins 7c'. The tubes 7c, as Well as the tubes L over thesection K', are radial and not inclined, as in the form previouslydescribed, and the orifices k2 are omitted. The separating-surface isprovided with a removable lining O, preferably of iieXiblematerial-rubber, for eXample--which protects said surface from theabrasion and wear of the material and acts with the elastic strips i2 toprevent injury to the separating-surface by contact with the partitions.This lining may of course be replaced when worn. The mechanism isotherwise like that illustrated in the other iigures in the drawings.

In the operation of this device the radial width of the channel throughwhich the heavier material is discharged being less than that in whichthe separation and discharge of the lighter is accomplished, there i isa greater velocity of flow, and consequently greater impellent aqueousforce in the former, resulting in the more certain dislodgment of theheavier at the desired point. As in the form shown in Figs. 2, 3, and 4,this difference in the aqueous forces is further added to by theincreased diameter of the liquid-discharge orifices over the section K,the solid pins aiding in the suspension of lighter material by theagitation produced by their contact. The taper of the cylinder F in theportion K maintains a practically constant velocity of now through theentire length thereof by increasing the area of the channel inapproximately the same ratio as the quantity of liquid is increased bythe added number of jets. It also permits lighter material to expand ormove more freely as it nears the point of discharge,

and removes the accumulated heavier farther from` the action of theagitating means, thus insuring moreperfect separation.

For conciseness the phrases aqueous forces and aqueous suspension havebeen used, although it is not intended to limit the The term cylinlliquid employed to water.

der, for the same reason, has been applied throughout to the threeportions of the treatment vessel, though any other form might beemployed by which the desired result would be obtained. It is to beunderstood that the word is used in this generic sense in both thedescription and claims.

It will be noticed that while the agitating and other forces opposingcentrifugal force permit or allow the precipitation of heaviersubstances they cause or eect-that is, compel-the suspension of thelighter in the liquid, whereas the centrifugal force acts positively toeffect both results. This explanation is made because it is not alwayspossible to bring out the distinction clearly in the claims withoutundue prolixitywhen mentioning these forces in connection. i

It is obvious that many 'changes and modiiications in the details ofconstruction of the various parts of the mechanism herein described maybe made as desired by the constructor, or to best suit the variedconditions under which the machine is operated, without departing frommy invention'.

In my applications, Serial, Nos. 505,410, l

IOO

face into two or more -portions traveling with respect thereto, andprovided with yieldable surfaces nearest to the separating-surface,substantially as described.

2. In a centrifugal separator, the combination of a rotatable, yieldableseparating-surface, and partitions travelingwith respect thereto fordividing such surface into two or more portions, substantially asdescribed.

3. In a centrifugal separator, a rotatable, yieldableseparating-surface, and partitions traveling with respect thereto,provided with yieldable surfaces on the portion nearest theseparating-surface, substantially .as described.

4. In a centrifugal separator, the combination of a rotatable cylinderprovided with a separating-surface, a feed-pipe communicating with thecylinder in a practically Watertight manner, a deflector in proximity tothe separating-surface, and partitions for dividing said surface and thespace in proximity thereto into two or more parts traveling with respectto the same, substantially as described.

5. In a centrifugal separator, the combination of a rotatable cylinderprovided with a separating-surface, a feed-pipe communicating with thecylinder in a practically watertight manner, a deflector in proximity tothe separating-surface, partitions for dividing such surface and 'thespace in proximity thereto into two or more parts traveling with IIOrespect to the same, and means for subjecting constantly-changingportions of the separating-surface to aqueous forces of greaterintensity than upon the remainder of such surface to effect the removalof heavier substances, substantially as described.

6. In a centrifugal separator, the combination of a rotatable cylinderhaving a closed end and provided with a separating-surface, a feed-pipecommunicating with the cylinder in a practically waterstight manner,hollow deflector near the separating surface provided with perforationsfor securing aqueous forces of greater intensity on one portion of theseparating-surface than another, and partitions traveling with respectto said surface, substantially as described.

7. In a centrifugal separator, the combination of a rotatableseparating-surface, means for deiiecting or guiding material along nearsaid surface, and partitions for dividing the separating-surface intotwo or more portions traveling with respect thereto, and provided withyieldable surfaces nearest to the separating-surface, substantially asdescribed.

8. In a centrifugal separator, the combinal tion of a rotatableseparating-surface, partitions for dividing the separating-surface intorespect to said surface for dividing it and the l space in proximitythereto into two or more y parts, and a feed-pipe communicating with thecylinder in a practically water-tight manner, substantially asdescribed.

lO. In a centrifugal separator, the combination of a rotatableseparating-surface upon which the material is in a submerged state,relatively-movable agitating projections to effect the suspension oflighter substances, means for causing their removal by securing a iiowof liquid, over one port-ion thereof, and means for removing the heavierby securing an increased velocity of flow over an other portion,substantially as described.

1l. Inacentrifugal separator, the combina tion of a rotatable cylinder,partitions for dividing the interior thereof into two or moresubstantially-closed passages extending from the feed to the dischargeend thereof, and means for removing lighter and heavier substancesseparately by different velocities of liquid flow longitudinally throughsaid passages, substantially as described.

12. In a centrifugal separator, the combination of a rotatable cylinder,partitions for dividing the interior thereof into two or moresubstantially-closed passages extending from the feed to the dischargeend thereof and through which there is a longitudinal flow, and meansfor effecting the suspension of lighter substances by securing agitationin one of said passages, and removing the heavier by increased agitationin another passage, substantially as described.

I3. In a centrifugal separator, the combination of a rotatable cylinder,partitions for dividing the interior thereof into two or moresubstantially-closed passages extending from the feed to the dischargeend thereof and through which there is a longitudinal flow, and afeed-conduit communicating with one of said passages, substantially asdescribed.

14. In a centrifugal separator,the combination of a rotatable cylinder,partitions for dividing the interior thereof into two or moresubstantially-closed passages extending from the feed to the dischargeend thereof and through which there is a longitudinal flow, a feed'-conduit communicating with one of said passages, an d means for rem ovinheavier in another of the passages, substantially as described.

15. In a centrifugal separator,the combination of a rotatable cylinder,and a shaft or cylinder within the same carrying partitions which dividethe passage between said cylin* ders into two or moresubstantially-closed sections or passages extending fronrthe feed to thedischarge eud thereof and through which there is a longitudinal flow,substantially as described.

1G. In a centrifugal separator,the combina-- tion of a rotatablecylinder, a shaft or cylinder within the same carrying partitions whichdivide the passage between said cylinders into two or more sections orpassages extending from the feed to the discharge end thereof, andagitating projections between the partitions, substantially asdescribed.

17. In a centrifugal separator,the combination of a rotatable cylinder,a hollow shaft or cylinder within the same carrying partitions whichdivide the passage between said cylinders into two or more sections orpassages, and hollow projections between the partitions, substantiallyas described.

18. In a centrifugal separator,the combination of a rotatable cylinder,a hollow shaft or cylinder within the same carrying partitions whichdivide the passage between said cylinders into two or more sections orpassages, and hollow projections of different internal diameters betweenthe partitions, substantially as described.

I9. In a centrifugal separator,the combination of a rotatable cylinder,a hollow shaft or cylinder within the same carrying partitions whichdivide the passage between said cylinders into two or more sections orpassages, and hollow projections inclined toward the point of dischargebetween the partitions, substantially as described.

20. In a centrifugal separator,the combination of a rotatableseparatingsurface forming one wall of a channel or passage, partitionsIOO IIO

traveling with respect thereto for dividing said channel into tWoportions, one of which portions has a greater radial width than theother, substantially as described.

2l. In a centrifugal separator,the combination of a rotatableseparating-surface forming one wall of a channel or passage, partitionstraveling` with respect thereto for dividing said channel into twoportions, one of which portions has a greater radial width than theother and gradually varies in Width from end to end of theseparatingsurface, substantially as described.

22. In a centrifugal separator,the combination of a rotatable cylinder,a divided hood into one Vpart of which the open end of the Aof saidpartitions extending into other part,

substantially as described.

ORRIN B. PEDK. Witnesses:

M. L. ALLEN, R. H. GARMAN.

It is hereby eertied that Letters Patent No. 560,625, granted May 19,1896, upon theapplieaton of Orrin B. Peek, of Chicago, Illinois, for animprovement in Oentrifugal Separators,7 were erroneously issued toMelinda Peek as sole owner of the invention; Whereas said Letters Patentshould have `been issued to The Patent Title Company, of same place,said The Patent Title Company being assignee, by mesne assignments,.ofthe entire interest in said invention, as shown by the assignments ofrecord in this Office; and that the said Letters Patent should be readWith this correction therein that the same may conform to the record ofthe oase in the Patent Ofoe.

Signed, eountersigned, and sealed this 23d day of J une, A. D. 1896.

[SEAL] JNO. M. REYNOLDS,

Assistant Secretary of the Interior. Oountersigned S. T. FISHER,

i Acting Commissioner of Patents.

